Photo-production of psi(2S) mesons at HERA
Quasi-elastic (z > 0.95) photo-production of ψ(2S) mesons has been observed at HERA for photon-proton centre-of-mass energies in the range 40 to 160 GeV. The ψ(2S) mesons were identified through their decays to ℓ+ℓ- and to J/ψπ+π-, where the J/ψ subsequently decays to ℓ+ℓ-, the lepton ℓ being...
Asıl Yazarlar: | , , , , , , , , , , , , , , , , , , , , , , , , |
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Materyal Türü: | Journal article |
Dil: | English |
Baskı/Yayın Bilgisi: |
1998
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